For sale is a vintage Leiman Air pump. Can't find any information on the this air pump, how and what it was used for. Someone suggested it's of a early tug boat and was used to supply air to a brass diving helmet. Not sure if this is true or false, any information greatly appreciated on this item. It turns over not stuck. It's a bit greasy and grimy. Please see photos for details and condition. Ask your questions before you bid. Thanks for looking